Earl Osweald of Derby

Earl Osweald of Derby (842-) was the Earl of Derby under Mercia.

Biography
Earl Osweald of Derby was born in 842, and he was from the House of Warwick. A Christian Anglo-Saxon, he was a vassal of Burghred of Mercia, and in 867 he raised troops for his master during the Great Heathen Army's siege of Derby early that year. However, Derby fell to the Norse, and he was defeated.